Mixing-faucet.



No. 736,023\ PATENTED AUG. 11, 1903. W. L. ROSS & D. G. TOLLINGER.

MIXING FAUGET. APPLICATION mum APR. 15. 1903.

N0 MODEL.

NITED STATES Patented August 11', 190 3.

PATENT "OFFICE.

WILLIAM L. ROSS AND DAVID C. TOLLINGER, or PHILADELPHIA, PENN- SYLVANIA.

MlXlNG-FAUCET.

SPECIFICATION forming part of Letters Patent No. 736,023, dated August11, 1903.

Application filed April 15, 1993. Serial No. 162,651. (No model.)

T0 at whom it may concern.-

Be it known that we, WILLIAM L. Ross, a resident of No. 410 Gaskillstreet, and DAVID O. TOLLINGER, a resident of No. 1811 Tree street, inthe city of Philadelphia, county of Philadelphia, and State ofPennsylvania, citi- Zens of the United States, have invented certain newand useful Improvements in Mixing-Faucets, of which the following is aspecification, reference being had to the accompanying drawings.

Our invention relates to a compound or mixing faucet by means of whichtwo liquids may be discharged through a common aperture in any desiredproportions or either one alone. As we have shown it in the drawings, itis designed by-us and is especially applicable for the purpose ofregulating the admission of hot and cold water to a bath or shower orfor similar purposes. We accomplish this end by a rotary valve-disk witha single aperture revolving upon a double-apertured seat. By making theapertures both of the seat and the valve-disk in the shape of segmentswe are able to-maintain a constant quantity of liquid passing throughthe valve,

while at the same time varying the proportions of the two fluids atwill.

In the accompanying drawings, Figure 1 is a vertical section through afaucet embodying our invention. Fig. 2 is a horizontal section takenalong the line 2 2, Fig. 1. Fig. 3 is a view of the valve-seat as seenabove.

Fig. 4is a detailed view of the valve-disk.

opening of leads by a channel I) to a similar segmental aperture 0,formed in the seat, standing in juxtaposition to the aperture 0.

D is the upper member of the faucet. It contains a valve-chamber d and amixingchamber (1 and has a spout d issuing from the mixing-chamber. Thelower edge of this upper member D is circular and rests upon thevalve-seat, being clamped thereto by the shouldered and threaded collarE. To prevent the possibility of rotation between these parts, two lugse 6 project down into corresponding holes in the valve-seat. Within thevalve-chamber is the valve proper in the form of a rotating disk F,formed intogrally with a valve-stem f, which projects up through themixing-chamber d and out through the top of the faucet, where itterminates in the handle G. The rotary disk F fills the valve-chamberand rests closely upon the valve-seat. It is pierced by a singlesegmental aperture h. It has formed upon its upper surface near itsperiphery two shallow cam-inclines i In registration with thesecam-inclines two projecting shoulders j are formed in the interior ofthe mixing-chamber. The segmental aperture h'in the valve-diskcorresponds in radial position and in curvature to thesegmental-apertures c 0', formed in the valve-seat, but is somewhatwider. The relative position of these parts is such that when the handleG is turned so as to be directly over the spout d the aperture h in thevalve-disk is central over the space between the apertures c c in theseat, with its edges equally overlapping each of said apertures. themixing-chamber an equal quantity of both In this-position it thereforeadmits to v liquids, which may be supposed to be hot and cold water,entering, respectively, by way of a. and a. By turning the handle, andthus rotating the valve from one side to the other, the proportion ofhot or cold Water admitted may be varied, and it will be noticed that,owing to the similarity of the segments and their relation to eachother, an increase in the quantity of one liquid admitted is accompaniedby precisely equal decrease in the quantity of the other liquidadmitted, the combined area of the eflicient portions of the apertures cc beingalways equal. This is true until the departure of the handle fromthe line of the spout becomes so great as to throw the valve-aperture hsufficiently to one side to cause it to register with only one of thetwo apertures in the seat, thus admitting either hot or cold waterwithout admixture of the other. A still further movement of the handlein the direction of the opening a throws the aperture it far enougharound to clear it entirely from the apertures c and shuts OK the supplyof Water altogether. At the same time the cam-inclines t t' ride underthe shouldersjj, which have been referred to, increasing the pressurebetween the valve and its seat, so as to insure complete tightness ofthe joint and absence of leakage. By varying the position of the cams'1; z' and the corresponding shoulders jj the shutting ofi of alladmission of water may be arranged to occur at either extremity of thethrow of the handle; but, as shown in the drawings, the vertical sidesof the cam-inclines t t come into contact with the shoulders j j andprevent further motion of the handle in the direction of the opening a,admitting hot wafor, before the valve-disk has been rotated so far as toadmit hot water to the complete exclusion of cold. In this way the valvemay be made antiscalding.

Having thus described our invention, we claim-=- 1. In a mixing-faucet,the combination of a base member which supports a circular valveseat,having two equal apertures each communicating by way of channels formedtherein with different ingress-openings; a mixing chamber fitted with asingle discharge-opening; and a valve in the form of a disk rotatingupon the valve-seat, interposed between the base member and themixing-chamber; said rotary disk having but a single aperture capable ofregistering with either one or simultaneously with both of the aperturesin the seat, substantially as described.

2. In a mixingfaucet, the combination of a mixing-chamber fittedwith adischarge-spout a valve in the form of a rotary disk, with a singlesegmental aperture controlling the entrance to the mixing-chamber; avalve-seat upon which said valve rests and rotates having two similarsegmental apertures communicating with different liquid-ingress pipes,said segmental apertures in the valve-seat being similar and inproximity to each other; said valve-aperture being arranged to registerwith either one or simultaneously with both of the apertures in theseat, and being of such width that the effective diminution of one ofthe ingress-apertures of the valveseat by the rotation of the valve isaccompanied by precisely equal effective enlargement of the otheraperture in the valve-seat, thereby maintaining constant the totalquantity of liquid admitted into the mixing-chamber, irrespective of theproportions in which the liquid is admitted from the differentingross-pipes, substantially as described.

3. In a mixing-faucet, the combination of a base member having two equaland opposite ingress-openings separated by a transverse partition; acircular valve-seat on top of the base member having two equal apertureseach communicating by separate channels with one of the ingressopenings; a rotary valve mounted on the valve-seat and having a singleaperture capable of registering with either one or simultaneously withboth of the apertures in the seat; and a mixing-chamber with a singledischarge-orifioe mounted on top of said valve-seat and valve, substan-'tially as described.

4. In a mixing-faucet, the combination of a circular valve-seat havingtwo equal ingressapertures; a rotary valve-disk having a single aperturewhich when centrally turned with relation to the two apertures of theseat registers simultaneously with both,and which by its movement to oneside or the other of this central position varies the proportion withwhich it registers with the said two apertures; a valve chambersurrounding said rotary valve-disk having projecting shoulders onopposite sides thereof above the valvedisk; and cam-inclines formed onthe upper surface of the valve-disk near its periphery, one on eitherside, and in contact with said projecting shoulders when the valve isrotated to closure, whereby leakage of the closed valve is prevented,substantially as described.

5. In a mixing-faucet, the combination of a circular valve-seat havingtwo equal apertures; a rotary valve-disk having a single aperture whichwhen centrally turned with relation to the two apertures of the seatregisters simultaneously with both, and which by its movement to oneside or the other of this central position varies the proportion withwhich it registers'with the said two apertures; and a stop whereby inone direction further rotation of the valve-disk away from thecentralposition is prevented before its aperture has wholly cleared theaperture on the farther side of the valve-seat, substantially asdescribed.

6. In a mixing-faucet, the combination of the base member fitted withtwo opposite ingress-openings and with a circular valve-seat withapertures communicating with each of said openings; a second membercontaining valve-chamber and mixing-chamber and sur rounding andsurmounting the valve-seat on the base member; a rotary valve-diskhaving a single aperture rotating within the valvechamber and in contactwith the valve-seat; a central spindle connected with the valvedisk andpassing up centrally through the mixing-chamber; and a discharge-orificefrom the mixing-chamber, substantially as described.

7. In a mixing-faucet, the combination of the base member fitted withtwo ingress-openings, and with a circular valve-seat with an aperturecommunicating with each of said openings 3 a second member containingvalvechamber and mixing-chamber, surrounding and surmounting thevalve-seat on the base member; a rotary valve-disk, having a singleaperture, rotating within the valve-chamber and in contact with thevalve-seat; a central to the valve-seat only at the time of completeclosure, substantially as described.

-In testimony whereof we have signed our I 5 names to thisspecification, this 8th day of April, 1903, in the presence of twosubscribing witnesses.

- WILLIAM L. ROSS.

DAVID C. TOLLINGER.

Witnesses:

JAMES H. BELL, M. K. TRUMBORE.

